209777740

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{229}}^1\times {\mathrm{281}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 446755680

約数和(自身を除く): 236977940

約数列:

[1, 2, 4, 5, 10, 20, 163, 229, 281, 326, 458, 562, 652, 815, 916, 1124, 1145, 1405, 1630, 2290, 2810, 3260, 4580, 5620, 37327, 45803, 64349, 74654, 91606, 128698, 149308, 183212, 186635, 229015, 257396, 321745, 373270, 458030, 643490, 746540, 916060, 1286980, 10488887, 20977774, 41955548, 52444435, 104888870, 209777740]

約数ペア:

[(1, 209777740), (2, 104888870), (4, 52444435), (5, 41955548), (10, 20977774), (20, 10488887), (163, 1286980), (229, 916060), (281, 746540), (326, 643490), (458, 458030), (562, 373270), (652, 321745), (815, 257396), (916, 229015), (1124, 186635), (1145, 183212), (1405, 149308), (1630, 128698), (2290, 91606), (2810, 74654), (3260, 64349), (4580, 45803), (5620, 37327)]